package com.rsa.boot.config;

import com.rsa.boot.config.shiro.realms.CustomerRealm;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * @author tanghailan
 * @date 2020-10-21 16:35
 */
@Configuration
public class ShiroConfig {
    //1.创建shiroFilter 负责拦截所有的请求
    @Bean
    public ShiroFilterFactoryBean shiroFilterFactoryBean(DefaultWebSecurityManager defaultSecurityManager){
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        //给fitter设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(defaultSecurityManager);
        //配置系统受限资源
        //配置系统公共资源
        Map<String, String> map = new HashMap<>();
        map.put("/index.jsp","authc"); //authc这个资源需要认证和授权
        //默认认证界面路径
        shiroFilterFactoryBean.setLoginUrl("/login.jsp");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(map);
        return shiroFilterFactoryBean;
    }

    //2.创建安全管理器
    @Bean
    public DefaultWebSecurityManager defaultSecurityManager(@Qualifier("getRealm") Realm realm){
        DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
        defaultWebSecurityManager.setRealm(realm);
        return defaultWebSecurityManager;
    }

    @Bean
    public Realm getRealm(){
        CustomerRealm customerRealm = new CustomerRealm();
        //修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        //设置加密算法为MD5
        credentialsMatcher.setHashAlgorithmName("md5");
        //设置散列次数
        credentialsMatcher.setHashIterations(1024);
        customerRealm.setCredentialsMatcher(credentialsMatcher);
        return customerRealm;
    }
}
